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Takagi

Takagi T-H3J-DV-N Junior Condensing Tankless Water Heater

Model T-H3J-DV-N
4.2/5 from 110 ratings
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Btu
140000
Venting
PVC Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Capacity Gpm
7
Energy Factor
0.94

Takagi T-H3J-DV-N Junior Condensing Tankless Water Heater Review

The Takagi T-H3J-DV-N is a Junior condensing tankless in Takagi's residential line. "T-H3J" identifies the Junior variant of the T-H3 platform; "DV-N" means direct-vent natural gas.

Specs: 140,000 BTU natural gas input, UEF 0.95 condensing, 6.6 GPM at a 35°F rise, stainless steel heat exchanger, PVC condensing venting. 15-year warranty on heat exchanger.

The Junior 140K BTU class is sized for 1-2 bath warm-climate homes. Smaller gas line requirements than 199K BTU — typically 1/2" line works at moderate distances.

About $1,600 unit, $3,200 installed. Right buyer: 1-2 bath warm-climate primary residence wanting Takagi engineering at moderate capacity through plumbing supply channels.

Pros
  • On-demand operation at 7 GPM — no standby heat loss; unlimited hot water if demand is within flow-rate capacity
  • Strong UEF 0.94 efficiency — approximately 20% lower annual operating cost vs 0.62 standard
  • 15-year warranty — top-tier coverage for residential water heaters
  • 7 GPM flow rate — sized for 2-bath simultaneous demand in warm-climate installs
Cons
  • Requires dedicated 140K BTU gas supply line — undersized gas piping is the leading cause of flow-rate shortfalls

Full Specifications

Brand
Takagi
Model Number
T-H3J-DV-N
Btu
140000
Venting
PVC Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Capacity Gpm
7
Energy Factor
0.94
Warranty Years
15

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